This PACCAR MX P1207 injector diagnostic document is the official fault identification and troubleshooting guide from the 2013 PACCAR MX Diagnostic Service Manual (pages 367–370). It provides mechanics and workshop technicians with complete procedures to diagnose, test, and resolve voltage-low and short-circuit faults affecting the cylinder 5 fuel injector solenoid valve on D420 pin A4.
Published by PACCAR as part of their EPA 2013 emissions-compliant engine diagnostic suite, this manual covers the MX engine family used in heavy-duty trucks requiring precise fuel injection control and electrical integrity checks.
Document details and specifications — PACCAR MX P1207
| Brand | PACCAR |
| Model coverage | PACCAR MX Engines (EPA 2013) |
| System/Group | DTCs (Diagnostic Trouble Codes) / MX Engines |
| Publication number | P1207 |
| Year/Revision | 2013 |
| Pages | 4 |
| File size | 0.5 MB |
| Format | |
| Language | English |
Table of contents
- Code number P1207 – Fault code description and information
- Component description – Fuel injector and solenoid valve operation
- Injector calibration codes and reprogramming requirements
- Diagnostic conditions and fault code set/reset triggers
- Electrical diagrams – D420 ECU, B460/B461 connectors, B421–B426 injector solenoid circuits
- Technical data – Injector solenoid valve cylinder 5 (B425) resistance specifications
- Step-by-step diagnostic procedure (Steps 1–4)
- Verification drive cycle validation
Applies to these models
This PACCAR MX P1207 injector document applies to all PACCAR MX engine variants equipped with six-cylinder fuel injection systems and electronic control units (ECU) running EPA 2013 emissions standards. The manual addresses cylinder 5 solenoid valve faults (B425 connector) and associated wiring harnesses (D420, B460, B461). For official PACCAR engine documentation and support resources, visit PACCAR official website.
Who needs this MX P1207 injector manual
Certified diesel mechanics, workshop owners, and fleet technicians servicing PACCAR MX-powered trucks require this MX P1207 injector guide to accurately diagnose voltage faults, perform electrical continuity tests, and replace faulty solenoid valve injectors without guesswork or component damage.
The complete MX P1207 injector PDF is available in the DiagTechPro manuals library. A free account is required to download the full 4-page service document.
Related manuals library
